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Finding the Fourth Proportional to 364,628.80, 546,939.60 and 115,310.80

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Solution

The fourth proportional to 364,628.80, 546,939.60 and 115,310.80 is: 172,965.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,628.80 : 546,939.60 = 115,310.80 : x
  2. Step 2: Convert to fraction form
    364,628.80/546,939.60 = 115,310.80/x
  3. Step 3: Cross multiply
    364,628.80x = 546,939.60 × 115,310.80
  4. Step 4: Simplify right side
    364,628.80x = 63,068,042,827.68
  5. Step 5: Solve for x
    x = 63,068,042,827.68/364,628.80
  6. Step 6: Final answer
    x = 172,965.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.